memory chip sizes!

  simongy 21:15 20 Aug 2003

Why does mem size go: 8,16,32,128,256mb?? and not something more sensible like: 10,100,500 if you know what I mean?? And I suppose the same applies to hard drive sizes....

  DieSse 21:29 20 Aug 2003

Memory sizes are what they are because of the binary numbering system used by computers.

The numbers which determines the memory size are the addressing capability - since this is derived from a binary number, you get maximumaddresses that are all powers of 2.

No the same doesn't apply to disk drives in quite the same way - and you do get 10Gb, 20Gb, 40Gb etc.

There are many extra factors in hrad drive tecnology - butat the heart of drive capacity is how much you can get on one side of the actual disk - you will then get multiples of that for a drive - depending on how many disks/sides are used.

  DieSse 21:33 20 Aug 2003

And just why is 10, 100, 500 a more sensible set of numbers?

Just because in every day use we have a numbering system which uses 10 as it's base, doesn't make t the most sensible.

There are many who would claim that a numbering system baes on 12 has many advantages

It's easier to pack 12 things in a box (4x3) than 10.

You can divide 12 into thirds, halves and quarters - you can't with 10

Why do you think dozens are still in such wide use - it's because of these advantages.

  lezw 21:36 20 Aug 2003

and dont forget hexadecimal based on 16

  simongy 22:02 20 Aug 2003

thks for the help

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